US 2017/0288532 A1 · CHARGE PUMP VOLTAGE REGULATOR

Abstract

A charge pump voltage regulator is provided. The charge pump voltage regulator includes a charge pump circuit, where an output terminal of the charge pump circuit outputs a stable voltage. The charge pump voltage regulator also includes a voltage divider circuit suitable to divide the stable voltage to output a divided voltage and a clock oscillator providing a drive clock signal for the charge pump circuit. In addition, the charge pump voltage regulator includes a first voltage comparator circuit suitable to output at least one of a first comparison result and a second comparison result. Further, the charge pump voltage regulator includes a logic control unit, where, when the charge pump voltage regulator operates in a standby mode, the logic control unit outputs a first control level to the clock oscillator according to the at least one of the first comparison result and the second comparison result.

Claims20

Dependent claims

A charge pump voltage regulator, comprising:

a charge pump circuit, wherein an output terminal of the charge pump circuit is connected to an output terminal of the charge pump voltage regulator and outputs a stable voltage;
a voltage divider circuit suitable to divide the stable voltage to output a divided voltage;
a clock oscillator providing a drive clock signal for the charge pump circuit;
a first voltage comparator circuit, wherein a first input terminal and a second input terminal of the first voltage comparator circuit respectively input a reference voltage and the divided voltage, and the first voltage comparator circuit is suitable to output at least one of a first comparison result and a second comparison result;
and
a logic control unit, wherein, when the charge pump voltage regulator operates in a standby mode, the logic control unit outputs a first control level to the clock oscillator according to the at least one of the first comparison result and the second comparison result.

3 more elements

A method for driving a charge pump voltage regulator, comprising:

providing a charge pump circuit, wherein an output terminal of the charge pump circuit is connected to an output terminal of the charge pump voltage regulator and outputs a stable voltage;
providing a voltage divider circuit suitable to divide the stable voltage to output a divided voltage;
providing a clock oscillator providing a drive clock signal for the charge pump circuit;
providing a first voltage comparator circuit, wherein a first input terminal and a second input terminal of the first voltage comparator circuit respectively input a reference voltage and the divided voltage, and the first voltage comparator circuit is suitable to output at least one of a first comparison result and a second comparison result;
and
providing a logic control unit, wherein, when the charge pump voltage regulator operates in a standby mode, the logic control unit outputs a first control level to the clock oscillator according to the at least one of the first comparison result and the second comparison result.

3 more elements

Dependencies are inferred from the claim text.

Charge pump voltage regulator

Life of this patent

Charge pump voltage regulator

Life of this patent

Abstract

Claims20